Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/git/libraries/provider_git_client_package.rb

@@ -0,0 +1,27 @@
+class Chef
+  class Provider
+    class GitClient
+      class Package < Chef::Provider::GitClient
+        include Chef::DSL::IncludeRecipe
+
+        provides :git_client, os: 'linux'
+
+        action :install do
+          # FIXME: rhel 5
+          include_recipe 'yum-epel' if node['platform_family'] == 'rhel' && node['platform_version'].to_i == 5
+
+          # Software installation
+          package "#{new_resource.name} :create #{parsed_package_name}" do
+            package_name parsed_package_name
+            version parsed_package_version
+            action new_resource.package_action
+            action :install
+          end
+        end
+
+        action :delete do
+        end
+      end
+    end
+  end
+end